Kia CARNIVAL 2023 Manual page 642

Maintenance
Tyre speed ratings
The chart below lists many of the differ-
ent speed ratings currently being used
for passenger car tyres. The speed rat-
ing is part of the tyre size designation on
the sidewall of the tyre. This symbol cor-
responds to that tyre's designed maxi-
mum safe operating speed.
Speed Rating
Symbol
S
T
H
V
W
Y
3. Checking tyre life (TIN : Tyre
Identification Number)
Any tyres that are over 6 years old,
based on the manufacturing date,
(including the spare tyre) should be
replaced by new ones. You can find the
manufacturing date on the tyre sidewall
(possibly on the inside of the wheel), dis-
playing the DOT Code. The DOT Code is
a series of numbers on a tyre consisting
of numbers and English letters. The
manufacturing date is designated by the
last four digits (characters) of the DOT
code.
DOT: XXXX XXXX OOOO
The front part of the DOT means a plant
code number, tyre size and tread pat-
tern and the last four numbers indicate
week and year manufactured.
For example:
DOT XXXX XXXX 1622 represents that
the tyre was produced in the 16th week
of 2022.
8 44
Maximum Speed
180 km/h (112 mph)
190 km/h (118 mph)
210 km/h (130 mph)
240 km/h (149 mph)
270 km/h (168 mph)
300 km/h (186 mph)
WARNING
Tyre age
Tyres degrade over time, even when
they are not being used. Regardless of
the remaining tread, we recommend
that tyres be replaced after approxi-
mately six (6) years of normal service.
Heat caused by hot climates or frequent
high loading conditions can accelerate
the aging process. Failure to follow this
warning can result in sudden tyre failure,
which could lead to a loss of control and
an accident involving serious injury or
death.
4. Tyre ply composition and
material
The number of layers or plies of rubber-
coated fabric in the tyre. Tyre manufac-
turers also must indicate the materials in
the tyre, which include steel, nylon, poly-
ester, and others. The letter "R" means
radial ply construction; the letter "D"
means diagonal or bias ply construction;
and the letter "B" means belted-bias ply
construction.
5. Maximum permissible inflation
pressure
This number is the greatest amount of
air pressure that should be put in the
tyre. Do not exceed the maximum per-
missible inflation pressure. Refer to "Tyre
specification and pressure label" on
page 9-9.
6. Maximum load rating
This number indicates the maximum
load in kilograms and pounds that can
be carried by the tyre. When replacing
the tyres on the vehicle, always use a
Tyres and wheels